A continuous detection device for band switching

Abstract

This invention relates to the field of band switch testing technology, and particularly to a continuous testing device for band switches. It includes a motor mounted on a bracket, a testing module mounted on the bracket, a rotating shaft fixedly connected to the motor's output shaft, an electrically controlled push rod mounted on the bracket, a fixed ring fixedly connected to the telescopic part of the electrically controlled push rod, a rotating ring rotatably connected to the fixed ring, a circular ring and several missing gears fixedly connected to the rotating ring, and a syringe mounted on the bracket, the syringe being connected to an injection tube. This invention adjusts the liquid ejection volume from the injection tube by adjusting the alignment of the circular ring and different missing gears with a rack, thereby changing the movement distance and timing of the telescopic part on the syringe driven by the rack. This allows the liquid to be ejected near the switch, simulating the external environmental influences experienced by the switch during prolonged use, making the continuous rotation detection of the switch more closely resemble the actual operating environment, and thus improving the accuracy of continuous switch testing.

Description

Technical Field

[0001] This invention relates to the field of band switch detection technology, and in particular to a continuous detection device for band switches. Background Technology

[0002] Rotary band switches are common electrical components, and their reliability directly affects the stability of the equipment they are used in. Rotary band switches used in complex environments such as kitchens and outdoors must withstand the long-term effects of external factors such as oil and moisture. Generally, durability tests are conducted on band switches before they leave the factory. However, most existing band switch testing devices focus on testing mechanical rotation performance, that is, using a drive mechanism to rotate the switch to verify its performance and lifespan. Our R&D personnel discovered certain defects in existing testing devices during the R&D and production process. Because the switch testing process is usually conducted for a short time in a "dry" environment, in real-world use, the switch is subject to long-term exposure to solid-liquid mixtures (such as kitchen grease), causing jamming and damage. This leads to a significant deviation between the test results and the actual lifespan of the switch, thus affecting the accuracy of the test results. Summary of the Invention

[0003] In order to overcome the shortcomings mentioned in the background art, the present invention provides a continuous detection device for band switching.

[0004] The technical solution is as follows: A continuous detection device for band switches includes a motor mounted on a bracket, a detection module mounted on the bracket, a rotating shaft fixedly connected to the output shaft of the motor, a first gear fixedly connected to the rotating shaft, a geared ring rotatably connected to the bracket and meshing with the first gear, an electrically controlled push rod mounted on the bracket, a fixed ring fixedly connected to the telescopic part of the electrically controlled push rod, a rotating ring rotatably connected to the rotating shaft via a spline, a circular ring and several missing gears fixedly connected to the rotating ring, a syringe mounted on the bracket, a rack fixedly connected to the telescopic part of the syringe, the several missing gears having different numbers of teeth and all of the several missing gears being used to drive the rack, an injection tube connected to the syringe, the discharge port of the injection tube facing the rotation axis of the geared ring, a one-way valve mounted on both the syringe and the injection tube, and a rotating component for turning the switch inside the geared ring.

[0005] Furthermore, the bracket is slidably connected to symmetrically distributed electric clamping blocks, the bracket is provided with grooves, and symmetrically distributed pressing blocks are slidably connected in the grooves, with the pressing blocks slidably connected to adjacent electric clamping blocks.

[0006] Furthermore, the rotating assembly includes two symmetrically distributed sliding blocks, the sliding blocks being fixedly connected to the toothed ring, the sliding blocks being provided with connecting frames, the connecting frames being rotatably connected to threaded telescopic rods, the telescopic portion of the threaded telescopic rods being slidably connected to adjacent connecting frames, and the telescopic portion of the threaded telescopic rods being fixedly connected to insert blocks.

[0007] Furthermore, the diameter of the insert gradually increases from the point near the rotation axis of the toothed ring to the point far away.

[0008] Furthermore, the fixed part of the threaded telescopic rod is fixedly connected to a second gear, and the connecting frame is rotatably connected to a third gear that meshes with the adjacent second gear. A connecting rod is fixedly connected between the two third gears.

[0009] Furthermore, elastic elements are fixed to both sides of the sliding block to buffer the movement of the sliding block, and the sliding block is slidably connected to the adjacent connecting frame.

[0010] Furthermore, the connecting frame is fixed with two symmetrically distributed stop blocks, which are located on both sides of adjacent sliding blocks. The stop blocks are used to limit the adjacent sliding blocks to restrict the maximum range of movement of the sliding blocks.

[0011] Furthermore, the connecting frame is slidably connected with symmetrically distributed sliding plates, which are located on both sides of the two stops, and the two ends of the elastic element are fixedly connected to the adjacent sliding block and the adjacent sliding plate, respectively.

[0012] Furthermore, the adjacent symmetrically distributed sliding plates are connected by a common threaded screw, which is used to adjust the position of the adjacent sliding plates to maintain and regulate the deformation of the corresponding elastic element.

[0013] Furthermore, the lead screw is fixedly connected to a pulley, and a connecting belt is wound between the two pulleys. The corresponding threads on the two lead screws have the same direction of rotation.

[0014] Compared with the prior art, the present invention has the following advantages: By adjusting the ring and different missing gears to align with the rack, the present invention changes the moving distance and timing of the telescopic part on the syringe driven by the rack, thereby adjusting the liquid spray volume of the injection tube and spraying the liquid near the switch to simulate the external environmental influences experienced by the switch during long-term use. This makes the continuous rotation detection of the switch more closely resemble the actual use environment, thereby improving the accuracy of continuous switch detection. The movement of the sliding block is buffered by the elastic element. During the reciprocating rotation of the sliding block driven by the gear ring and the movement of the sliding block relative to the connecting frame, the sliding block drives the connecting frame to move through the elastic elements on both sides, reducing the instantaneous resistance encountered by the connecting frame during the initial movement. This reduces the instantaneous resistance encountered by the threaded telescopic rod, the insert, and the switch during the initial rotation, reducing the probability of the switch being obstructed and damaged due to a sudden change in the direction of rotation during rapid and continuous reciprocating rotation. This makes the rotation of the switch more closely resemble the actual use situation and improves the accuracy of switch detection. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional structural diagram of the syringe of the present invention;

[0017] Figure 3 This is a three-dimensional structural diagram of the toothed ring of the present invention;

[0018] Figure 4 This is an exploded three-dimensional view of the toothed ring and electric clamping block of the present invention.

[0019] Figure 5 This is a three-dimensional structural diagram of the extrusion block of the present invention;

[0020] Figure 6 This is a three-dimensional structural diagram of the insert block of the present invention;

[0021] Figure 7 This is a three-dimensional structural diagram of the stop block of the present invention.

[0022] Reference numerals: 1-Bracket, 2-Motor, 201-Rotating shaft, 3-First gear, 4-Gear ring, 5-Electrically controlled push rod, 6-Fixed ring, 7-Rotating ring, 8-Circular ring, 9-Missing gear, 10-Rack, 11-Instrument, 12-Injection tube, 13-One-way valve, 14-Electric clamping block, 15-Groove, 16-Squeezing block, 17-Sliding block, 18-Connecting frame, 19-Threaded telescopic rod, 20-Insertion block, 21-Second gear, 22-Third gear, 23-Connecting rod, 24-Elastic element, 25-Stop block, 26-Sliding plate, 27-Lead screw, 28-Pulley, 29-Connecting belt. Detailed Implementation

[0023] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0024] In real-world use, switches can become stuck or damaged due to long-term exposure to solid-liquid mixtures (such as kitchen grease). This can lead to a significant discrepancy between the test results and the actual lifespan of the switch, thus affecting the accuracy of the test results.

[0025] Example 1

[0026] A continuous detection device for band switching, such as Figures 1-3As shown, the system includes a motor 2 mounted on a bracket 1. The bracket 1 is equipped with a detection module (not shown in the figure). Before detection, a switch pin is connected to the detection module. By rotating the switch at different angles (i.e., different switch positions), different electrical signals are output to the detection module to detect the electrical changes at each position of the switch during use. The bracket 1 is equipped with a control terminal (not shown in the figure). Both the detection module and the motor 2 are electrically connected to the control terminal. The output shaft of the motor 2 is fixedly connected to a rotating shaft 201, and the rotating shaft 201 is fixedly connected to a first gear 3. The bracket 1 is rotatably connected to a gear ring 4 that meshes with the first gear 3. Motor 2 is a reciprocating motor. The output shaft of motor 2 is used to drive the gear ring 4 to reciprocate through the rotating shaft 201 and the first gear 3. The bracket 1 is equipped with an electrically controlled push rod 5 that is electrically connected to the control terminal. The telescopic part of the electrically controlled push rod 5 is fixedly connected to a fixed ring 6. The fixed ring 6 is rotatably connected to a rotating ring 7 that is splinedly connected to the rotating shaft 201. During the up-and-down sliding process, the rotating ring 7 can rotate relative to the fixed ring 6. The rotating ring 7 is fixedly connected to a circular ring 8 and several missing gears 9. The bracket 1 is equipped with a syringe 11. The telescopic part of the syringe 11 is fixedly connected to a rack 10. The rack 10 is used to drive the telescopic part of the syringe 11 to move. The number of teeth on several missing gears 9 is different, so as to control the moving distance and timing of rack 10 when the missing gears 9 drive rack 10. When rack 10 is aligned with ring 8, rotating ring 7 drives ring 8, and ring 8 cannot drive rack 10 to move. When rack 10 is aligned with different missing gears 9, rotating ring 7 drives all missing gears 9 to rotate. The timing at which different missing gears 9 start to drive rack 10 to move is different, and the distance that different missing gears 9 drive rack 10 to move is different. Several missing gears 9 are used to drive rack 10. Injector 11 is connected to injection tube 12. Injector 11 is connected to [not shown in the figure]. The external injection device shown has an injection tube 12 with its outlet facing the rotation axis of the toothed ring 4 to inject liquid (e.g., oil or water) to the rotation axis of the toothed ring 4. Both the syringe 11 and the injection tube 12 are equipped with one-way valves 13. The one-way valve 13 of the syringe 11 is connected to the external injection device. When the telescopic part of the syringe 11 moves forward and retracts, the one-way valve 13 of the injection tube 12 opens and the one-way valve of the syringe 11 closes. When the telescopic part of the syringe 11 moves backward and extends, the one-way valve 13 of the injection tube 12 closes and the one-way valve of the syringe 11 opens. A rotating assembly for turning the switch is provided inside the toothed ring 4.

[0027] like Figure 4 and Figure 5As shown, the bracket 1 is slidably connected to two symmetrically distributed electric clamping blocks 14. Both electric clamping blocks 14 are electrically connected to the control terminal. The bracket 1 is provided with a groove 15, and two symmetrically distributed pressing blocks 16 are slidably connected in the groove 15. The pressing blocks 16 are provided with locking elements (not shown in the figure). After the position of the pressing blocks 16 is adjusted, the position of the pressing blocks 16 is locked by the locking elements. The pressing blocks 16 are slidably connected to the adjacent electric clamping blocks 14. The pressing blocks 16 are provided with inclined surfaces. The height of the two pressing blocks 16 gradually increases from the opposite side to the back side. In use, the switch is placed on the inclined surfaces of the two pressing blocks 16. When the two pressing blocks 16 move towards each other, the switch moves upward by pressing the inclined surfaces. When the two pressing blocks 16 move away from each other, the switch moves downward to adjust the placement height of different models of switches.

[0028] like Figure 4 and Figure 6 As shown, the rotating assembly includes two symmetrically distributed sliding blocks 17. The sliding blocks 17 are fixedly connected to the toothed ring 4. The sliding blocks 17 are provided with a connecting frame 18. In this embodiment, the connecting frame 18 is fixedly connected to the adjacent sliding block 17. The connecting frame 18 is rotatably connected to a threaded telescopic rod 19. The telescopic part of the threaded telescopic rod 19 is slidably connected to the adjacent connecting frame 18. The telescopic part of the threaded telescopic rod 19 is fixedly connected to an insert 20. The fixed part of the threaded telescopic rod 19 rotates to drive the telescopic part on it to extend and retract, so as to adjust the front and rear position of the insert 20. The diameter of the insert 20 gradually increases from the rotation axis near the toothed ring 4 to the distance away, so that the insert 20 can be inserted into switches of different models.

[0029] like Figure 6 As shown, the fixed part of the threaded telescopic rod 19 is fixedly connected to the second gear 21. The threads of the two threaded telescopic rods 19 have opposite directions. The connecting frame 18 is rotatably connected to the third gear 22 that meshes with the adjacent second gear 21. The two third gears 22 are fixedly connected to a connecting rod 23. When the connecting rod 23 is rotated, the connecting rod 23 drives the second gear 21 through the third gear 22. The fixed parts of the two threaded telescopic rods 19 rotate in the same direction, so that the telescopic parts of the two threaded telescopic rods 19 move synchronously in opposite directions or in opposite directions.

[0030] The specific working principle is as follows:

[0031] When this device is needed to perform continuous testing (continuous reciprocating rotation of a switch to test its durability) on a band switch, the operator places the switch between two electric clamping blocks 14, with the lower part of the switch located on the inclined surface of two pressing blocks 16. The locking mechanism of the pressing blocks 16 is opened, allowing the pressing blocks 16 to slide left and right. Depending on the switch model, the pressing blocks 16 slide left and right and drive the switch up and down through their upper inclined surface, so that the upper surfaces of different switch models move to the same horizontal plane. The position of the pressing blocks 16 is locked by the locking mechanism. The two electric clamping blocks 14 are opened through the control terminal, causing the two electric clamping blocks 14 to move towards each other and clamp the switch. Then, the two electric clamping blocks 14 are closed through the control terminal.

[0032] After the two electric clamping blocks 14 clamp the switch, the operator rotates the connecting rod 23. The connecting rod 23 drives the two second gears 21 through the two third gears 22, so that the second gears 21 drive the threaded telescopic rod 19 to rotate synchronously. The telescopic parts of the two threaded telescopic rods 19 extend out, and the telescopic parts of the threaded telescopic rods 19 drive the insert 20 to move. The two inserts 20 move in opposite directions and are inserted into the groove of the switch (the horizontal socket for installing the housing).

[0033] After the two inserts 20 are inserted into the grooves of the switch, the connecting rod 23 stops rotating. The operator turns on the motor 2 and the detection module through the control terminal. The output shaft of the motor 2 drives the first gear 3 and the rotating ring 7 to rotate back and forth through the rotating shaft 201. The rotating ring 7 drives the ring 8 and all the missing gears 9 to rotate back and forth. The first gear 3 drives the two sliding blocks 17 to rotate back and forth through the gear ring 4. The sliding blocks 17 drive the threaded telescopic rod 19 to rotate back and forth through the connecting frame 18. The telescopic part of the threaded telescopic rod 19 drives the switch to rotate back and forth through the inserts 20, so as to continuously rotate the switch back and forth. At the same time, the detection module detects and records the electrical signal output by the switch during the rotation process.

[0034] During the rotational testing of the switch, the ring 8 and all the missing gears 9 reciprocate. If the ring 8 is aligned with the rack 10 at this time, the rack 10 does not move. When liquid needs to be injected into the switch surface, the operator activates the electric control push rod 5 through the control terminal. The telescopic part of the electric control push rod 5 drives the rotating ring 7 to move upward along the rotating shaft 201 through the fixed ring 6. The rotating ring 7 drives the ring 8 and all the missing gears 9 to move upward, so that one of the missing gears 9 moves to align with the rack 10. With the reciprocating rotation of the missing gear 9, after the missing gear 9 meshes with the rack 10, it drives the rack 10 to move back and forth. The rack 10 drives the telescopic part of the syringe 11 to move back and forth. When the telescopic part of the syringe 11 moves forward and retracts, the one-way valve 13 of the injection tube 12 opens, and the one-way valve of the syringe 11 closes, so that the liquid (such as oil or water) in the syringe 11 is sprayed into the switch through the injection tube 12. When the telescopic part of the syringe 11 extends backward, the one-way valve 13 of the injection tube 12 closes, and the one-way valve of the syringe 11 opens, allowing liquid from the external injection device to be added into the syringe 11. By adjusting the ring 8 and different missing gears 9 to align with the rack 10, the movement distance and timing of the telescopic part on the syringe 11 driven by the rack 10 are changed, thereby changing the spray volume of the syringe 11 and the injection tube 12, and spraying the liquid near the switch to simulate the external environmental influences on the switch during long-term use (such as the rotary band switch used in the kitchen being affected by oil and water mixtures; after oil and water adhere to the switch, the oil and water will emulsify and the viscosity will increase during the switch rotation, thus simulating the situation where the switch is exposed to an oily environment for a long time in the real use environment), making the continuous detection of the switch closer to the use environment, thereby improving the accuracy of the continuous detection of the switch.

[0035] After the continuous testing of the switch is completed, the operator shuts off the motor 2 and the electric control push rod 5 through the control terminal, and then opens the two electric clamps 14 through the control terminal. The two electric clamps 14 move in opposite directions. Then, the operator manually reverses the connecting rod 23. The connecting rod 23 drives the threaded telescopic rod 19 to reset through the third gear 22 and the second gear 21. The telescopic part of the threaded telescopic rod 19 drives the insert block 20 to reset. The operator then removes the tested switch.

[0036] In real-world applications, the interval between each rotation of a switch is long and the rotation speed is slow. However, during testing, in order to shorten the testing time, the switch needs to rotate rapidly and continuously. As a result, the internal parts of the switch are subjected to a great deal of inertial force during the continuous reciprocating rotation, which can damage the switch. This situation does not match the actual damage situation of switches in reality, and thus affects the accuracy of switch testing.

[0037] Example 2

[0038] Based on Example 1, such as Figure 6 and Figure 7 As shown, elastic elements 24 are fixedly connected to both the left and right sides of the sliding block 17 to buffer the movement of the sliding block 17. In the above embodiment, the connecting frame 18 is fixedly connected to the adjacent sliding block 17. In the embodiment, the sliding block 17 is slidably connected to the adjacent connecting frame 18. The elastic element 24 is a spring. During the process of the toothed ring 4 driving the sliding block 17 to reciprocate, the sliding block 17 moves relative to the connecting frame 18. The elastic element 24 on one side of the connecting frame 18 is compressed, and the connecting frame 18 on the other side is stretched. The sliding block 17 drives the connecting frame 18 to move through the elastic elements 24 on both sides, so that the connecting frame 18 starts to move slowly, reducing the instantaneous resistance encountered by the connecting frame 18 when it initially moves. This reduces the instantaneous resistance encountered by the threaded telescopic rod 19, the plug 20, and the switch when it initially rotates, and reduces the probability of the switch being blocked and damaged due to a sudden change in the direction of rotation during rapid and continuous reciprocating rotation (in actual use, the switch rotates slowly and the interval between each rotation is long. During the testing process, the switch is easily damaged by force when it continuously reciprocates).

[0039] like Figure 7 As shown, the connecting frame 18 is fixed with two symmetrically distributed stop blocks 25. The two stop blocks 25 are located on the left and right sides of the adjacent sliding block 17, respectively. The stop blocks 25 are used to limit the adjacent sliding block 17 to restrict the maximum movement range of the sliding block 17, thereby controlling the rotation angle of the connecting frame 18 within a fixed range. This reduces the probability that the elastic element 24 will be subjected to increased pressure before the switch starts to rotate due to the excessive rotation angle of the sliding block 17, and ensures the stability of the threaded telescopic rod 19, the insert block 20 and the rotation angle of the switch.

[0040] like Figure 7 As shown, the connecting frame 18 is slidably connected to two symmetrically distributed sliding plates 26. The two sliding plates 26 are located on the left and right sides of the two stops 25, respectively. The two ends of the elastic element 24 are fixedly connected to the adjacent sliding block 17 and the adjacent sliding plate 26, respectively. A lead screw 27 is threadedly connected between the two adjacent sliding plates 26. The lead screw 27 is provided with two threads for connecting the two adjacent sliding plates 26, and the two threads of the lead screw 27 have opposite directions of rotation. When the lead screw 27 is rotated, the lead screw 27 drives the two adjacent sliding plates 26 to rotate. 6. The sliding plates 26 can be moved in opposite directions or in opposite directions to adjust their positions, thereby maintaining and controlling the deformation of the corresponding elastic element 24. The lead screw 27 is fixedly connected to the pulley 28, and a connecting belt 29 is wound around the two pulleys 28. The corresponding threads on the two lead screws 27 have the same direction of rotation. When one lead screw 27 is rotated, the lead screw 27 drives the other lead screw 27 through the pulley 28, the connecting belt 29 and the other pulley 28, so that the two lead screws 27 rotate synchronously, thereby making the four sliding plates 26 move the same distance.

[0041] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A waveband switch continuous detection device, comprising a motor (2) installed on a support (1), the support (1) being provided with a detection module, an output shaft of the motor (2) being fixedly connected with a rotating shaft (201), the rotating shaft (201) being fixedly connected with a first gear (3), the support (1) being rotatably connected with a gear ring (4) engaged with the first gear (3), characterized in that, The support (1) is provided with an electric control push rod (5), the telescopic part of the electric control push rod (5) is fixedly connected with a fixed ring (6), the fixed ring (6) is rotationally connected with a rotating ring (7) which is splined with the rotating shaft (201), the rotating ring (7) is fixedly connected with a circular ring (8) and a plurality of missing tooth gears (9), the support (1) is provided with a syringe (11), the telescopic part of the syringe (11) is fixedly connected with a rack (10), the number of teeth of the plurality of missing tooth gears (9) is different, and the plurality of missing tooth gears (9) are used for driving the rack (10), the syringe (11) is communicated with a syringe tube (12), the liquid outlet of the syringe tube (12) faces the rotating axis of the tooth ring (4), and the syringe (11) and the syringe tube (12) are both provided with a check valve (13), and the tooth ring (4) is provided with a rotating assembly for a screw switch; The rotating assembly comprises two symmetrically distributed sliding blocks (17), the sliding blocks (17) are fixedly connected with the tooth ring (4), the sliding blocks (17) are provided with connecting frames (18), the connecting frames (18) are rotationally connected with threaded telescopic rods (19), the telescopic parts of the threaded telescopic rods (19) are slidably connected with adjacent connecting frames (18), and the telescopic parts of the threaded telescopic rods (19) are fixedly connected with plug blocks (20). The two sides of the sliding block (17) are fixedly connected with elastic members (24) for buffering the movement of the sliding block (17), and the sliding block (17) is slidably connected with the adjacent connecting frame (18). The connecting frame (18) is fixedly connected with two symmetrically distributed stop blocks (25), and the two stop blocks (25) are located on the two sides of the adjacent sliding block (17) respectively. The connecting frame (18) is slidably connected with symmetrically distributed sliding plates (26), and the symmetrically distributed sliding plates (26) are located on the two sides of the two stop blocks (25) respectively, and the two ends of the elastic member (24) are fixedly connected with the adjacent sliding block (17) and the adjacent sliding plate (26) respectively. The adjacent symmetrically distributed sliding plates (26) are threadedly connected with a lead screw (27) in common, the lead screw (27) is used to adjust the positions of the adjacent sliding plates (26), so that the deformation amount of the corresponding elastic member (24) is maintained and controlled.

2. The apparatus according to claim 1, wherein The support (1) is slidably connected with symmetrically distributed electric clamping blocks (14), the support (1) is provided with a groove (15), the groove (15) is slidably connected with symmetrically distributed extrusion blocks (16), and the extrusion blocks (16) are slidably connected with the adjacent electric clamping blocks (14).

3. The apparatus according to claim 1, wherein The diameter of the plug block (20) gradually increases from the position close to the rotating axis of the tooth ring (4) to the position far away from the rotating axis.

4. The apparatus according to claim 1, wherein The fixed part of the threaded telescopic rod (19) is fixedly connected with a second gear (21), the connecting frame (18) is rotationally connected with a third gear (22) which is engaged with the adjacent second gear (21), and the two third gears (22) are fixedly connected with a connecting rod (23) in common.

5. The apparatus according to claim 1, wherein The stop block (25) is used for limiting the adjacent sliding block (17) to limit the maximum moving range of the sliding block (17).

6. The apparatus according to claim 1, wherein The screw rod (27) is fixed with a belt pulley (28), two belt pulleys (28) are commonly provided with a connecting belt (29) therebetween, and the corresponding screw threads of two screw rods (27) are of the same rotation direction.

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